Bicycle frame



FIG. 1 is a front perspective view of the bicycle frame taken from aright side with a kickstand in an up position;

FIG. 2 is a rear perspective view of the bicycle frame taken from a leftside with the kickstand in a down position and including simplifiedpedals;

FIG. 3 is a right side elevational view of the bicycle with thekickstand in the up position and including simplified pedals; and,

FIG. 4 is a left side elevational view of the bicycle with the kickstandin the up position and including simplified pedals.

The broken lines showing other portions of a bicycle including thekickstand, pedals, and other portions form no part of the claimeddesign.

The ornamental design for the bicycle frame, as shown and describe d.